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Using a sample of 472 local Universe (z<0.06) galaxies in the stellar massrange 10.25 < log M*/M_sun < 10.75, we explore the variation in galaxystructure as a function of morphology and galaxy colour. Our sample of galaxiesis sub-divided into red, green and blue colour groups and into elliptical andnon-elliptical (disk-type) morphologies. Using KiDS and VIKING derived postagestamp images, a group of eight volunteers visually classified bars, rings,morphological lenses, tidal streams, shells and signs of merger activity forall systems. We find a significant surplus of rings ($2.3\sigma$) and lenses($2.9\sigma$) in disk-type galaxies as they transition across the green valley.Combined, this implies a joint ring/lens green valley surplus significance of$3.3\sigma$ relative to equivalent disk-types within either the blue cloud orthe red sequence. We recover a bar fraction of ~44% which remains flat withcolour, however, we find that the presence of a bar acts to modulate theincidence of rings and (to a lesser extent) lenses, with rings in barreddisk-type galaxies more common by ~20-30 percentage points relative to theirunbarred counterparts, regardless of colour. Additionally, green valleydisk-type galaxies with a bar exhibit a significant $3.0\sigma$ surplus oflenses relative to their blue/red analogues. The existence of such structuresrules out violent transformative events as the primary end-of-life evolutionarymechanism, with a more passive scenario the favoured candidate for the majorityof galaxies rapidly transitioning across the green valley.

Galaxy and Mass Assembly (GAMA): Variation in Galaxy Structure Across the Green Valley